ldb: version 1.1.24

ldb: version 1.1.24

* fix for CVE-2015-5330, bug 11599
* fix for CVE-2015-3223, bug 11325
* move ldb_(un)pack_data into ldb_module.h for testing
* fix installation of _ldb_text.py
* fix propagation of LDB errors through TDB
* fix bug triggered by having an empty message in database during search

Bug: https://bugzilla.samba.org/show_bug.cgi?id=11325
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11599
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11636

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>